Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53c88ebf4ebfcbc5d7b2c593ab25655a3d8549323d76f7abf45bb78f537578cc' 
  AND token = 'CODjUOh029aMIV60Ad1A5JMdGEu3GMfpPI/X2PaDrIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}